Oxyethylene bismaleimide derivatives

Details Oxyethylene bismaleimide derivatives Oxyethylene bismaleimide derivatives

1987-11-25

1989-10-24

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548522, 526262, C07D207452

Patent

active

048763586

ABSTRACT:
Novel bismaleimides of the formula ##STR1## wherein n=1, 2, or 3 are formed in two steps by reacting a diamine and maleic anhydride to form a bismaleamic acid which is reacted with acetic anhydride in the presence of acetone to form the bismaleimide.
The bismaleimide monomer and prepolymers and the polybismaleimides formed from them may have improved flexibility, processibility, toughness and solubility.

REFERENCES:
patent: 3766138 (1973-10-01), Crivello
patent: 3855239 (1974-12-01), Crivello
patent: 3951902 (1976-04-01), Jones
White (I), White, "Reactions of Diaminoalkanes . . . ", 1984, J. of Appl. Polymer Sci, vol. 29, 891-899.
White (II), White, "Synthesis & Properties of High Mol Wt Step-Gr . . . ", 1986, Ind Eng. Chem. Prod. Res. Dev., vol, 25, 395-400.

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